Vortech 1999-2006 4.8L/5.3L/6.0L Light Truck/SUV - Manual (Page 28)

P/N: 4GL020-010
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08OCT08 v5.0(99-07 GM Trk (4GLv5.0))
18
NOTE: • All vehicles equipped with On-star that have aftermar-
ket stereos will experience problems with the ability
to re-program the vehicle’s ECM. It is necessary to
disconnect the aftermarket stereo from the factory
wiring harness before continuing with the programming
procedure.
• Do not disturb the cable or turn the ignition off during
this time. If the programming is disrupted, the computer
will not start or run your vehicle!
IMPORTANT! To ensure trouble-free programming of your vehicle’s computer:
• All model years up to 2002:
Locate “interior” fuse panel and remove Qty 2 SEO labeled fuses.
Locate “exterior” fuse panel ane remove Qty 2 SEO labeled fues.
• 2003‑2005 model year vehicles”
Locate “exterior” fuse panel and remove Qty 1 INFO, Qty 1 RADIO and Qty 1
RADIO AMP labeled fuses.
• Turn off all accessories and close doors to prevent unnecessary drain on the battery.
• Do not attempt to program your vehicle while a battery charger is connected.
• Improper battery voltage will result in failure of the programming process.
• Do not disconnect the cable or turn off the ignition during programming.
14.B REFLASH COMPUTER, DIABLO PREDATOR EQUIPPED KITS
A. Reconnect the battery.
B. Locate the vehicle’s OBD2 connector lo-
cated in the lower left hand corner of the
dash on the driver’s dise of the vehicle.
C. Attach the OBD2 connector from the Flash
tool that is provided in the kit to the vehicle’s
OBD2 port. Make sure this connector is
seated all the way in the vehicle’s OBD2
port. You don’t want this connector to dis-
connect during programming or damage
may occur to the vehicle’s ECM.
D. The Reflash tool should power up and
display three parameters.
• Performance tune
• Diagnostics
• Options
E. Select “performance tune” and press the
enter button in the middle of the arrow
keys.
F. Read the disclaimer entirely, then select
agree and press ENTER.
G. At this point please read the screen dis-
played on the reflash tool. If you have any
questions, either refer to the manual that
is provided with the reflash tool or contact
our service department for futther assis-
tance.
H. Turn the ignition on (do not start the ve-
hicle). Set the parking brake and press the
ENTER button to continue.
I. SELECT TUNE will be displayed at the top
of the screen. Use the arrow keys to select
the appropriate tune for your vehicle and
press the ENTER button. You will have a
choice.
J. Continue to follow the screen and when
finished unplug the reflash tool form the
vehicles OBD2 port.
ESCAPE
ENTER
OR
SELECT
ARROWKEYS
Fig. 16.B-a